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Build a system around your factory radio

AudioControl's LC6i processor allows you to add aftermarket amps, speakers, and subs to your factory radio, so you can enjoy better sound without losing factory features. It accepts speaker-level signals from your factory radio or amplifier, so you can use it with any system.

Inputs and outputs

The LC6i features six speaker-level inputs that let you connect amplified signals, including multi-wire cables from Bose® and other premium factory systems up to 400 watts. The LC6i sums all the signals you send it, even if they're actively crossed over by your factory system, so you get a strong, full-range signal for your processors and amps. The LC6i features six RCA preamp outputs that'll handle the traditional front/rear/sub setup.

Level matching is a breeze

AudioControl couldn't make it much easier to set up your system. Just set your factory stereo to about 3/4 of its maximum volume, and turn the output level control of the LC6i until the "Maximized" light begins to flicker. Adjust the gain controls on your amps and you're done. You've just matched your levels, so you can count on getting maximum performance and minimum noise from your amp setup.

Convenience

The optional dash-mount subwoofer controller allows you to adjust the level of your sub channel on the go. The speaker-level inputs sense incoming signals and turn on the LC6i, while a built-in 12-volt trigger tells your amps or other gear to turn on.

Hands-on research

What's in the box?

Scratch & Dent items may be missing non-essential accessories. In some cases the manufacturer's accessories have been replaced with generic equivalents.

Product Research

Features

Speaker Input: The speaker
level inputs are compatible with nearly any factory stereo system, even most
Bose systems. There are 3 pair of inputs that will accommodate up to 400 watts.

Channel Summing: The LC6i
has the ability to sum together multiple input channels (4 or 6) from the
factory source unit into 2 channels. This is handy when the factory system has
multiple, actively crossed-over signals sent from the OEM source unit or amplifier(s). For example, in some vehicles there is an actively crossed-over
tweeter, midrange, and woofer all in the front of the vehicle. The LC6i lets you
take all of those signals and sum them together to get a high-quality,
full-range, pre-amp signal without the use of any additional cables or hardware.

AutoMode Inputs: When there
is no signal present at the channel 3 input, the channel 2 input automatically
feeds the channel 2 and channel 3 outputs.

Output Level: The +/- 12 dB output level allows you to
adjust the head unit's voltage to the top of your amp's input range; up to 9.5
volts RMS. Each of the three pair of RCA outputs has its own level
adjustment.

Auto Turn-on: The main speaker
level input has a signal sensing circuit; the unit turns on when there's a
speaker level input signal and turns off when the signal disappears.

Remote Output: The +12 volt
DC remote output will trigger an amp to turn on whenever the LC6i is
on. The remote's maximum current output is 1 amp.

Optional Sub Level Control: With the addition of an optional
wired remote (161ACR1,
sold separately), you can easily adjust the output level of
channel 3, often used for a subwoofer.

Ground Isolation: The power supply ground is switchable, in case of
ground loop noise. The factory position is fully isolated (typically the best
choice), but can be changed to Ground or 200Ω.

Terminal Blocks: The power/ground/remote in/remote out
terminal and the speaker level input terminals are removable; the wiring is
attached to the block, then the block is plugged into the LC6i. The terminal
blocks will accommodate wire up to 12 gauge.

Specifications:

Maximum Speaker Level Input: 400 watts

Maximum Output Voltage: 9.5 volts RMS

Frequency response: 10Hz-22kHz

THD: 0.01%

Input Impedance: 20 kΩ

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find elsewhere. That's because we have our own in-house Product Research
team. They verify what’s in the box, check the owner's manual, and record
dimensions, features and specs. We stay on top of new products and technologies
to help people make informed choices.

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Excellent company and products

The Audiocontrol LC6i OEM integration unit was exactly what I needed for my stereo upgrade. I wanted to add a 4 channel amp to my factory stereo and replace the component speakers in the doors and upgrade to 2 way speakers in the rear. I will eventually add another amp and subs to finish the system. The LC6i took the 2 front and 2 rear inputs from the radio and gave me a total of 3 outputs (front/rear/sub). The LC6i also has a remote in and out for switchable power to your amp. It is a good idea to use their remote turn on to avoid any popping when powering up the radio. Adjusting the amp and gain is quite easy . Turn the gain on the amp all the way down, the gain control is all adjusted from the LC6i. Unplug the RCA cables from your amp, turn the gain all the way down on all 3 channels of the LC6i and turn your radio up to 3/4 maximum volume. Turn the gain up on the first channel of the LC6i, when the little light starts to flash then the output should be properly matched. Fade all the way to the rear and repeat the process. That was it. You should have all the sound you want if you did everything right, and the sound is clean! If I pause a CD and turn it up to maximum volume there is no white noise at all.

Very Impressed

I was advised to buy this product by the Crutchfield staff because I wasn't going to be replacing my stock head unit, yet I was updating everything else. Let's just say I'm in no rush to replace my head unit now. I love how the AC has a smart switching function that turns on the amps when it senses an audio signal but turns the amps and itself off when my system is off. Great functionality for the price!

Ford sync looks stock now sounds professional

There are probably a 100 different ways to install the LC6i. I placed mine under my drivers seat and ran the front and rear speaker output from my ford escape basic sync head unit by cutting the wires and splicing in speaker wire. I ran a separate 12 gauge power wire from the battery with a 1 amp inline fuse. I didn't trust the unit to turn on with the GTO so I ran the switch from the fuse box with a 3 amp fuse tap. All the fuses inside the cabin were not switchable so I was forced to rub through the fire wall and tap into the ignition coil with an additional fuse tap. Don't wrap the wire around the fuse and try and jam it in that never works and may short out something really important. Adjusting the gains was easy just turn the head unit to 3/4 volume with high quality music. The red light should just flicker then return to normal listening levels.

Pros:I love listening to music in my car now

Cons:The device is much larger than I first thought. It runs on low power so you can place it anywhere.

Bulletproof indeed

Ever since I was introduced to audiocontrol ( 1996 epicenter) I knew they were going to be around for a long time. They deliver quality and useful products time and time again. This line driver/ converter delivers solid performance at a bargain price. This thing is so easy to setup and install a monkey could do it, no offense to monkeys, and it works beautifully. I highly recommend this unit.

Lc6i / awsome !

I've just added this to my factory 2013 tundra w/ cover and 2 art series PPI amps . WOW !!!!! What a difference it made . A piece of cake to hook up instructions were easy to follow got it done under an hour . Ask around on a couple of shops how much to run power to LC6i . They all wanted $200 or more . If you can identify which of your wires goes form your unit to LC6i do it yourself and save $$$ . Read the instruction carefully step by step you should be fine . I had my 12 yr old son ask me if he could help all I did was guide him which wire to solder together and what's positive , negative and what remote does . To my surprise he got it all done we fired up the system and all systems go

Pros:Easy self explanatory instructions to each and every detail with or without after market accessories . Over all very please that I purchase the LC6i and I would recommend it to whom that like the stock on their system

American quality

From the time i picked up the LC6I I could feel the Quality. Then I started to look through the instructions which were very well written with some sarcastic humor. All around awesome. If you want a refined sound system, you need this product.

Pretty darn great...with one quibble

This little fella was the perfect solution for dealing with a significant noise floor issue in my car that was present with any Class D amp I tried. Manipulating the output levels with the amp gains was the solution I needed. I do wish the 3rd bank of outputs was linked to the 1st and not the 2nd, though.

Pros:Easy to setup, generally solid construction

Cons:The input connectors are not very deep, so you need to keep your wire lengths short going into the device, and they overall a little strange to deal with.

2012 Camaro

Outstanding product, works very well with the factory installed stero. The sound quality is amazing, remote turn on that senses the high level inputs makes it unnessecary to tap into a switched 12v source for my amp which keep the alterations to the factory system down to tapping into the speacker wires! If you want to keep your factory look and functionality and be able to 6 channels of power this is a no brainner you gotta get this thing!

Pros:remote output for amp turn on that is stand alone requiring no switched 12v input to turn the unit on. Saves a splice into a switched source for both the unit and the amps---very cool

Works Great

I've had amps and aftermarket stereos for the last 20-something years but this time I wanted to keep the factory head unit in my new Prius. This LC6i was the solution I needed and it works great, I use it to run low-level inputs into a 4-channel amp and a monoblock. I love the signal-sensing remote output for the amps and the separate sub channel it creates. It's very simple to configure and does exactly as it's advertised to do. I set it up as instructed, adjusted the amp settings as needed, and the stereo system sounds great! They say the head unit can make or break a good stereo system and I agree, but I think Audio Control once again comes to my rescue to make it all come together nicely and help create a clean source. Of course I can't avoid giving Crutchfield its due kudos. As always, a great experience.

Pros:Creates a clean source for the amplifiers with the factory head unit

Keep your factory head unit - add amps, crossovers

this product is slightly above novice level for installation. i highly suggest you do reasearch or condisder having it installed professionaly. however, if you have 6+ hours to spend, go right ahead. you will love it! upon installation, i tested the sound coming through the factory speakers and was blown away! NO WAY! this line out converter will take up to 6 inputs! that's right, 6!

Pros:great sound, great way to power up your factory head unit.

Cons:RCA outputs only. you need at least a 4 channel amp to run your front and rear speakers. i recommend a 5 channel amp with built in crossovers and a subwoofer to truly enjoy this product.

Worked Great in 08 Malibu LT

This product was just the answer I was looking for. After a few days of owning my car I knew the bass was not cutting it, so I purchased a Kenwood amp to power a small sub. While better, it still lacked musicality and punch. A little research led me to the conclusion that an aftermarket deck was costly and complicated,(On-Star, XM, and steering wheel controls). I bought the LC6i and the ACR-1 remote bass knob, basic Focal components for the doors and coaxials for the rear deck and added a used 5-Ch Kicker amp along with a prefab Eclipse enclosure housing 2 12" subs in a sealed enclosure. Installed the brains under the passenger seat, all the speakers behind factory grills, and the amp and subs in the trunk, only thing I have to worry about is stashing my cell phone charger when I park my car, which defys expectations when you hear me pull up. It was a complicated install, more so for the speakers, but it does require removing the factory stereo and cutting into the factory wires, but it was well worth the effort. I can hear my music with the sunroof open on the freeway, feel the heavy metal kickdrums, and loosen the wax in my ears by tuning to Shade 45. I do recommend the remote bass control, I use it frequently based on song choice and system volume. To sum it up, if your car is intregrated and the sound is unbearable, this may be your answer.

Pros:Factory features and controls with much improved quality in just a few hours.

Honda Accord Note

This unit does exactly what it is designed to do and is simple to install. Crutchfield's Data Sheets make it very easy. I only gave it 4 stars because it does not come with the sub volume cable and if your factory system reduces bass volume at higher levels and increases them at lower then you either have very little bass at high levels or to much bass at lower levels.

Now for those with Honda Accords. If you have an Accord with Active Noise Cancelation you will have to disable it or you will hear a loud womp womp sound when driving. This is the active noise cancellation sending a very low frequency signal to the system that is greatly amplified by the sub. Disabling the ANC system is as simple as locating the 2 microphones in the cabin (1 up front usually by the map lights and one in the back usually on the back dash. look for a small hole in the back dash that is it). Once removed the system works great.

Pros:Easy to install and adjust. greatly improved over all system in my car

Cons:If you vehicle has active noise cancellation make sure you can disable it (Google is a good place to start). Really needs to the bass adjust none.

WOW

I had my Kenwood KAC-8405 amp hooked up through the speaker-level inputs with signal sensing turn-on and the sound was good but it lacked bass and image on higher volumes. Hooked up the LC6i and my speaker came to life, WOW. I bought the LC6i to add a subwoofer but my Soundstream 6x9's in my 06 Honda Accord sound very solid now. So lets see if I really need the sub...

Perfect for Factory Stereo Integration

I purchased this after making the mistake of buying the MTX re-Q5 for my 2011 F-150 with the premium stereo (no Nav or Sony). My goal was to keep the stock deck while still having a good sounding stereo and not sacrificing quality or features of the stock systems and Sync.

I have it in the truck along with two Rockford Fosagte Prime amps, Boston SR60 components, Infinity Kappa coaxials, and one Kicker CVT 12 for bass.

The LC6i handles this flawlessly and has very good (and kinda corny) instructions. It walks you through everything and is very easy to wire up. Adjustments and features are just enough for what I needed.

All in all a fantastic product and I wish I would have bought it the first time around!

WOW!

Written By Andrew O., Davenport, IA on Sunday, May 08, 2011

I'm not sure why this product hasn't gotten all 5 star reviews, because I couldn't be happier. I had installed my 2 Alpine Type R's in my 2003 Chevy Impala with the factory head unit by themselves first and they sounded good, but they kind of drained out the music so I had to turn them down so they weren't really reaching their potential, until I purchased the LC6i. This thing is an absolute necessity if you plan on upgrading your sound system while keeping your factory head unit. It has got to be the most important component in my system. Highly recommended.

I Give Up with my Altima 2009

I give up This was my last try ,,,, this thing did not work with my factory radio, it sound better with the oem speakers,,, i am sad for this product that offer a lot and still the same decrease of bass or to much bass

Good Value, Okay performance

Written By Rob P, Mount Joy, PA on Wednesday, August 25, 2010

I have a 2006 Audi A4 with the base stereo but I wanted to retain a stock look so this was naturally the place to start. The produce does what it advertises. It takes your signals from you stock speaker lines, sums them together, and gives you a full signal through 6 channels of preamp outputs. It also allows you to retain all of your stock functions such as steering wheel controls and Sat radio.

The problem I find with this unit is that it creates noise in your system. You really have to fine tune your system to minimize noise and maximize output. Even when you set up as advertised and set your gains on the LC6i to the "maximized" setting there is still significant system noise and the gains had to be backed off. I was able to tune the system to eventually get minimal noise at an acceptable level. This, however, created a situation where I do not have as much output as I would like.

I looked everywhere for the noise issue and all signs point to the LC6i as the culprit. I tried at least 3 different grounding locations for both my amp and my LC6i to no avail. The LC6i also has a built in Ground Loop Isolator so there should not be a ground loop causing this noise.

If you want to retain the functionality and look of your stock head unit but upgrade the rest of your system this is a good product.

I, however, am seriously considering now upgrading my head unit for better sound.

AudioControl LC6i

Purchased this product for 2009 Nissan that has a factory Bose system. The factory radio is connected to a factory amp which is located under the rear deck. The factory amp actively crossed over all the factory speakers. Ex: lows only for rear deck speakers, highs only for dash, and full range for door speakers. With the lc6i my installer took a signal from all of these (three in all) and sent them to the lc6i. The voltage the lc6i sends to my Alpine PDX is so high that I am able to turn the gains down very low and still get a very strong signal to my Type R components. If you absolutey need to or want to keep your factory radio on a newer vehicle and want to add after market amps/equalizers to acheive quality sound start with this product.

Great product but a small defect

Written By Than, Woodbridge, VA on Thursday, July 23, 2009

I bought this to use as a line output converter for my M3 because the car system's sub outputs were rated around 150W. LC6i was highly recommended so I tried it out thinking I could use the GTO to tun on my JL 500/1v2 amp. Wrong. It did not sense enough input I guess and would not turn on so I had to run a single wire from the front of the car for the remote in. Otherwise, all of my wires would have been in the back and would have made it easier to dismount.

Once it is turned on though, the sound is amazing. I have my amp turned down pretty low and just used the output level on the LC6i and still hits pretty hard on my JL 12w6v2. I have the exact same setup in my IS350 without LC6i (using the Scosche LOC) and I could tell a huge difference that the LC6i made to the sound.

Despite the GTO not working for me, I still rate it pretty high because it is an amazing product. I'll try it out again with another LC6i I am going to order for the Lexus to figure out if my first one is defective.

Cleansweep? Meh. LC6i? Yeah!

Written By Kris, Seattle, WA on Wednesday, May 13, 2009

I know that the Cleansweep and LC6i serve different functions, but it wasn't until I removed the LC6i from my system to install a Cleansweep that I realized how solid the LC6i is. I couldn't have been more disappointed by the Cleansweep's performance, and I kept thinking to myself, "Can a line-output-converter make THAT much difference?" In short, yes.

It sends very high quality signals to my two amplifiers, such that I can keep their gains dialed low, and get great great sounding audio from my stock head unit. I have, in fact, become so convinced in the quality of the AudioControl equipment that I returned the Cleansweep and I'm looking to the EQ6 and the 6XS as my next purchases. Skip the line-output-converter sold on this site and others. Save for the LC6, and you'll save yourself time, money and frustration in the long run.

I also got the separate subwoofer control and am quite pleased with it as well. With all of my music being digital, it helps dial in appropriate subwoofer levels when switching albums.

AudioControl LC6i

Written By Brian, Shrewsbury, MA on Thursday, March 19, 2009

Great product! I had tried 2 other loc's and got alternator whine. I tried
moving the ground, creating a new common ground with and without hu,
nothing worked. Since I planned on eventually getting something like the
Lc6i for channel summing anyway, I went ahead and ordered it, received it,
installed it...silence! Nothing but the music. I had so much whine before
that I was shocked at the total absence of noise. I'm summing 2 channels,
driving 2 amplifiers, and using it to trigger those amps. Everthing is
completely adjustable. I've been using it for 6 months now and am
completely satisfied. Like I said, a great product.